Floor construction.



No. 702,6I6. Patented lune.|7, |902.'

w. H.. BABRAR.

FLOOR CONSTRUCTION. (Application tiled Apr. 4, 1901.)

2 Sheets-Sheet 2.

(No Model.)

l/l//T/vfssfs /M/E/v TOR f of I-beams, sets of plates forrningan' arch with l tion.

. ing the webs.

lthan any reliable .iloor construction now Fig. 4 isa section of. amodiied form,.and

UNITED 'STATESI PATENT OFFICE.

VWILLIAM BARRAR, OF BOSTON, MASSACHUSETTS.

' --FLooR ooNsTnuoTloN'.

SPECIFICATION Aframing part of La-.ers Patent No. 702,616, datedy :rune 17, 1902.

Application tiled April 4, 19017.

To all whom/t may concern: 4

Be it known that I, WILLIAM H. BARRAR, of Boston, in the State of Massachusetts, have' invented an Improvement in Floor Construction, of which the following is a specification. v The objects of my'invention are to provide a floor construction that will be less expensive known and yet begof ample strengthto sus-v tain the load to which it isto be subjected' and also to provide a properly-ventilated floor construction. f

My invention consists in thc combination a lat top, and lower plates'supportingthe ends of the arch and each extending from I-beam to I-beam and'supported by the I- beams. v

In the drawings, Figure l is a plan,.partly broken away, of my improved ioor construc- Fig. 2 is asection online 2 2 2 of Fig. l. Fig. 3 is a section on line 3 3 of Fig. l.

Fig. 5 is a plan of the modified form.

In the drawings, A A are I-beams. B Bare lower plates, of Portlandcement or the like, with segmental ribs C C. These plates are rhomboidal in plan and have grooves b b along their ends to receive ythe ribs of the I-beam's.

D D are tubes, of tin or the like, to form passages d d for better ventilation.

E E are upper plates, of cement or the like, with horizontal webs e @extending less than half-way across from I-.beam to I-beam, with vertical webs ff extendingfdown to the lowerV plates B B, and segmental ribs g g connect- G G are at plates with ribs and form the keystone of the arch. s s. g

N N-are hand-holes in the upperplates and keystones, O O are Stoppers for the handholes, P is wood screed, R is concrete, S is planking, and T is plastering.

In using my construction theI-beams are placed in position as usual. The lower plates are then laid across from one I-beam to the other, the rhomboidalform of the plates enabling theirgrooved ends to engage the ribs of the I-beams. The'upper plates are then putin position with their-webs ff against the I-beams, and s each plate extends less than half-way across the span and is held by the Serial Nabil-245. V(No model.)

vworkmen until the keystone G isplaced between two opposite plates, completing the arch, while the top of the arch is flat and ready to receive the flooring. The upper and lower plates may of course have as many ribs as de sired, according to the load to be carried.

Upon the upper plates and keystones is laid In the modification, Figs. 4 and 5, the lower yplatesl are formed asin the vother figures,

except that they-lack the grooved ends, and

therefore do'not .eover'thennder 'surface of g vthe ribs' of the I-b'eams, and those ribs are covered by wire-netting V, and the plasterling T covers the 'under surface of the lower ribs of the I-beams. The air-passages .fr a; are similar to dol. In this modification the lower plates W may be rectangular in plan, for they with a dat top, the I-beams forming the abutments of the arch and the middle plates of the sets forming the keystones, the end plates each havinga horizontal web and a vertical web, with rib connections between the webs; and lowerplates `supporting the ends of the arch,and each'extending from I-beam to I- beam and supportedlby the I-beams.

2.' Iny a1 floor construction the combination of I-beams; sets of plates forming an arch with a at top, the I-beams forming the abutments of'thearchand the middle lplates of the sets forming the keystones, the end plates 'leach having a horizontal web and a vertical web, with'rib connections between the webs; and lower plates supporting the endsof the arch, and each extending from I-beam to I- beam and supported by the I-beams, each lower plate being ribbedgupwardly,substan- I tially as shown. l i

WILLIAM `I-I. BARRAR.

Witnesses: v A v C. B. MAYNADIER, G. A. RocKwELL. 

